free_pages_check

[Yinghai Lu]

wonder why free_pages_check mm/page_alloc.c is using bit OR than logical OR

@@ -450,9 +450,9 @@ static inline void __free_one_page(struc

 static inline int free_pages_check(struct page *page)
 {
-       if (unlikely(page_mapcount(page) |
-               (page->mapping != NULL)  |
-               (page_count(page) != 0)  |
+       if (unlikely(page_mapcount(page) ||
+               (page->mapping != NULL)  ||
+               (page_count(page) != 0)  ||
                (page->flags & (
                        1 << PG_lru     |
                        1 << PG_private |

YH
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